U-CONTROL UMA25S user manual, mainly introducing the product's safety instructions, detailed safety instructions, power switch instructions, etc.
This manual introduces the UMA25S, a 25‑key MIDI controller that can operate in independent, USB (standard) and audio‑interface modes. It includes important safety warnings, device requirements, and step‑by‑step hardware connection diagrams.
The guide covers software driver installation for Windows XP and macOS, explains how to use the controller as a USB/MIDI device or as an audio interface, and details all control elements, preset management, MIDI functions, and technical specifications. This manual is written in Chinese.
| Audio Input Impedance | 5 kΩ |
|---|---|
| Audio Input Max Level | +6 dB V |
| Line Input Impedance | ~27 kΩ |
| Line Input Max Level | 0 dB V |
| Audio Output Impedance | ~400 Ω |
| Audio Output Max Level | -8 dB V, 2 × 1.3 mW @ 100 Ω |
| USB MIDI Class Compatibility | Yes |
| USB Interface | USB 2.0, Full‑speed 12 Mbit/s |
| Power via USB | 5 V, up to 200 mA |
| External Power Supply | 9 V, up to 200 mA |
| Dimensions (H × W × D) | 46 mm × 460 mm × 220 mm |
| Weight | ≈ 2.2 kg |
The UMA25S can be powered via USB, an internal battery, or an external 9 V power supply.
Press the OCT < / > buttons to shift the keyboard range up or down by four octaves.
Press the + / – buttons together; the display will show “Pnc” and all notes will be silenced.